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Table 2 Correlation coefficients among various root traits measured in the present study

From: Genetic variants in root architecture-related genes in a Glycine soja accession, a potential resource to improve cultivated soybean

Traits TRTL RFW TRL SA AD RV LAD TERN TERL L3 SA3 PA3 V3 T2
TRTL 1              
RFW -.199* 1             
TRL .478** .005 1            
SA .420** .285** .897** 1           
AD -.324** .421** -.509** -.147 1          
RV .239** .531** .518** .832** .327** 1         
LAD -.346** .479** -.504** -.138 .792** .342** 1        
TERN .132 .152 .741** .682** -.338** .412** -.314** 1       
TERL .308** .176* .824** .799** -.317** .532** -.307** .924** 1      
RDL3 .241** .389** .137 .482** .466** .739** .477** .029 .157 1     
RDSA3 .230** .399** .131 .474** .478** .738** .486** .022 .148 .999** 1    
RDV3 .130 .361** .100 .413** .436** .661** .457** .066 .133 .855** .857** .853** 1  
RDT2 .421** -.052 .165* .220** .010 .186* -.083 -.141 .022 .351** .344** .340** .272** 1
  1. Correlations were performed using 160 RI lines of the population. Data used were the means of four replications of independent measurements. Pairwise correlation coefficients were significant at the *5% or **1% significance level.
  2. TRTL, Tap root length (cm); RFW, Root fresh weight (g); TRL, Total root length (cm); SA, Surface area (cm2); AD, Average diameter (mm); RV, Root volume (cm3); LAD, Lateral average diameter (mm); TERN, Tertiary root number; TERL, Tertiary root length (cm); RDL3, Root distribution in length classification 3 (1.0–1.5 mm); RDSA3, Root distribution in surface area classification 3 (1.0–1.5 mm); RDV3, Root distribution in volume classification 3 (1.0–1.5 mm); RDT2, Root distribution in thickness classification 2 (0.5–1.0 mm).